DocumentCode :
3788193
Title :
Analysis of coupling losses in multifilamentary untwisted BSCCO/Ag tapes through a.c. susceptibility measurements
Author :
D. Zola;F. Gomory;M. Polichetti;F. Strycek;J. Souc;P. Kovac;S. Pace
Author_Institution :
Dept. of Phys., Univ. of Salerno Baronissi, Italy
Volume :
15
Issue :
2
fYear :
2005
Firstpage :
2903
Lastpage :
2906
Abstract :
Losses as a function of the a.c. magnetic field amplitude (B/sub 0/) have been evaluated at 77 K in untwisted BSCCO(2223)/Ag tapes, at different frequencies, by measuring the imaginary part of a.c. magnetic susceptibility. In particular, the measurements were performed on different portions of the same tape, obtained by cutting it in pieces with different length, starting from around 120/spl ap/mm down to 10/spl ap/mm. The experimental results show that the losses depend on the sample length, but this observed behavior can not be always ascribed to the coupling mechanism among filaments. In this work we discuss the observed experimental behavior for different typologies of tapes. The data are analyzed by comparing them with the results obtained by means of analytical models allowing us to characterize the tapes with respect to the coupling mechanisms.
Keywords :
"Bismuth compounds","Loss measurement","Magnetic field measurement","Magnetic analysis","Frequency measurement","Magnetic susceptibility","Length measurement","Particle measurements","Performance evaluation","Data analysis"
Journal_Title :
IEEE Transactions on Applied Superconductivity
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2005.848629
Filename :
1440275
Link To Document :
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